High-strength steel disc brake

Abstract

The utility model discloses a high-strength steel disc brake which comprises a fixing support and a connecting pipe, the fixing support and the connecting pipe are made of steel, the fixing support is a punch forming part, the connecting pipe is a cold and hot extrusion forming part, and the connecting pipe is welded and fixed on the fixing support to form a support assembly. The utility model has the following advantages and effects: the scheme utilizes a new mechanical structure, and has the effects of low production cost, simple manufacturing process, high processing efficiency and high structural strength.

Description

Technical Field

[0001] The utility model relates to the technical field of disc brakes, in particular to a high-strength steel disc brake. Background Art

[0002] Vehicles such as bicycles, electric vehicles and motorcycles are generally equipped with disc brakes. Disc brakes are a brake tool that brakes by acting on brake pads fixed on the hub through a caliper (also called a caliper). The purpose of braking is mainly achieved through friction. However, there are usually two types of calipers on the current market. One type of caliper is made of aluminum alloy material, which is formed into cast aluminum by die-casting the aluminum alloy. However, cast aluminum cannot avoid internal structural problems during the production process, and is prone to defects such as pores, inclusions, and looseness, which may cause breakage during driving and cause safety hazards; another type of caliper is formed by cold forging or hot forging of aluminum alloy. Although the caliper formed by cold forging or hot forging has high structural strength and good performance, the overall forming process of cold forging or hot forging of aluminum alloy is relatively complicated, with high production cost and low efficiency, resulting in that low-end and mid-end vehicles usually do not adopt cold forging or hot forging of aluminum alloy for processing; therefore, it is urgent to develop a steel caliper that has the advantages of the above two calipers, so that the production cost is low, the manufacturing process is simple, the processing efficiency is high, and the use effect of high strength and high performance is also achieved. Utility Model Content

[0003] The utility model aims to provide a high-strength steel disc brake, which has the effects of low production cost, simple manufacturing process, high processing efficiency and high structural strength.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions: a high-strength steel disc brake, including a fixed bracket and a connecting pipe, the material of the fixed bracket and the connecting pipe is set to steel, the fixed bracket is a stamped part, the connecting pipe is a hot and cold extruded part, and the connecting pipe is welded and fixed to the fixed bracket to form a bracket assembly.

[0005] By adopting the above technical scheme, the utility model separates the fixed bracket and the connecting pipe into two components and prepares them by different processes, and uses stamping to make the fixed bracket, thereby ensuring the dimensional accuracy of the fixed bracket and the accuracy of the installation of the bracket assembly on the vehicle. At the same time, the connecting pipe is made by hot and cold extrusion molding, thereby improving the density of the connecting pipe and thus improving the structural strength of the connecting pipe. The connecting pipe is then welded to the fixed bracket to form a bracket assembly. Different from the bracket assembly produced as a whole by hot and cold extrusion molding of aluminum alloy, the utility model only uses hot and cold extrusion molding for the connecting pipe that requires high structural strength, which can not only improve the structural strength of key load-bearing components, but also reduce the processing time and cost of other components, simplify the processing technology, and thus improve the overall processing efficiency of the bracket assembly of the utility model, and has the effects of low production cost, simple manufacturing process, high processing efficiency and high structural strength.

[0006] The utility model is further configured as follows: the connecting pipe comprises an integrally arranged straight pipe portion and a cold-forged special-shaped pipe portion.

[0007] The utility model is further configured as follows: a side wall of the connecting pipe is provided with an escape groove along the circumferential direction, the escape groove is matched with the brake pad for escape, and the escape groove is arranged between the straight pipe portion and the cold-forged special-shaped pipe portion.

[0008] By adopting the above technical solution, the avoidance groove is used to avoid the brake pad, so that the brake pad can extend from the avoidance groove into the inner cavity of the connecting pipe to realize linkage braking.

[0009] The utility model is further configured as follows: the cold-forged special-shaped pipe portion comprises a plurality of stop protrusions extending radially outwardly from the connecting pipe, and the fixing bracket is stop-matched with the stop protrusions.

[0010] By adopting the above technical solution, the addition of the stop protrusion can improve the position installation accuracy between the fixed bracket and the connecting pipe, thereby ensuring the braking accuracy and feel.

[0011] The utility model is further configured as follows: the fixing bracket comprises an arc-shaped welding portion located in the middle and mounting portions integrally arranged at both ends of the arc-shaped welding portion.

[0012] By adopting the above technical solution, the arcuate side wall of the arcuate welding portion can increase the fitting area between the middle of the fixed bracket and the connecting pipe, thereby improving the welding firmness between the connecting pipe and the fixed bracket. In addition, the mounting portions at both ends of the arcuate welding portion can be used to fix the bracket assembly to the vehicle.

[0013] The utility model is further configured as follows: the mounting parts on both sides are symmetrically arranged at the two ends of the arc-shaped welding part and are located on the same plane, and each of the mounting parts is provided with a waist-shaped hole.

[0014] By adopting the above technical solution, in the prior art, bolts are usually inserted into through holes to fix the bracket assembly to the vehicle. In the utility model, the through holes are replaced by waist-shaped holes corresponding to the bolts, and the relative installation position of the bracket assembly is adjusted by adjusting the relative position of the bolts in the waist-shaped holes.

[0015] The utility model is further configured as follows: the fixing bracket is integrally bent to form a regulator mounting piece, and the regulator mounting piece is provided with a mounting hole.

[0016] By adopting the above technical solution, the regulator mounting piece can be used to install the regulator, and the regulator mounting piece formed by the integrated bending process makes the connection structure between the regulator mounting piece and the fixing bracket more stable.

[0017] The utility model is further configured as follows: a clamp assembly for frictionally cooperating with a brake pad is provided in the inner cavity of the connecting tube, the clamp assembly comprises a ball, a rotating seat rotatably arranged in the connecting tube, and a damping plate, the rotating seat is provided with a plurality of guide grooves, the rotating seat is guided and cooperated with the ball through the guide grooves, and the ball is pushed and cooperated with the damping plate.

[0018] By adopting the above technical solution, the brake line is pulled to pull the rotating seat to rotate relative to the connecting tube, and the guiding cooperation between the guide groove and the ball is used to push the ball relative to the rotating seat to undergo axial displacement in the inner cavity of the connecting tube, thereby making the ball close to or away from the brake pad.

[0019] The utility model is further configured as follows: the support assembly is coated with a rubber layer.

[0020] By adopting the above technical solution, the addition of the rubber coating layer can improve the corrosion resistance and overall structural strength of the bracket assembly.

[0021] The utility model is further configured as follows: the connecting pipe is provided with a plurality of stop protrusions extending radially outward, the rubber coating layer is coated on the stop protrusions to form a protrusion, and a hollow groove is provided in the protrusion.

[0022] In summary, the utility model has the following beneficial effects:

[0023] A bracket assembly is formed by welding a stamped fixed bracket and a hot and cold extruded connecting pipe. The stamped fixed bracket can ensure its dimensional accuracy, and the hot and cold extruded connecting pipe increases its density and thus improves its own structural strength. Different from the bracket assembly produced as a whole by hot and cold extrusion of aluminum alloy, the utility model only uses hot and cold extrusion to form the connecting pipe that requires high structural strength, which can not only improve the structural strength of key load-bearing components, but also reduce the processing time and cost of other components, simplify the processing technology, and thus improve the overall processing efficiency of the bracket assembly of the utility model, which has the effects of low production cost, simple manufacturing process, high processing efficiency and high structural strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the bracket assembly of the utility model.

[0025] Figure 2 It is another structural diagram of the bracket assembly of the utility model.

[0026] Figure 3 It is an exploded view of the bracket assembly of the utility model.

[0027] Figure 4 This is a view of the support assembly of the utility model in the rubber-encapsulated state.

[0028] Figure 5 It is a structural diagram of the support assembly of the utility model, which is equipped with a driving arm and a support.

[0029] In the figure: 1. bracket assembly; 2. fixed bracket; 21. arc-shaped welding portion; 22. mounting portion; 221. waist-shaped hole; 23. regulator mounting plate; 231. mounting hole; 3. connecting pipe; 30. avoidance groove; 31. straight pipe portion; 311. stop protrusion; 32. cold-forged special-shaped pipe portion; 4. clamp assembly; 41. ball bearing; 42. rotating seat; 43. guide groove; 5. rubber coating; 51. protrusion; 511. hollow groove; 6. driving arm; 7. bracket; 8. regulator. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with the accompanying drawings.

[0031] A high-strength steel disc brake, such as Figure 1 As shown, it includes a fixed bracket 2 and a connecting pipe 3. The fixed bracket 2 is a stamped part, and the connecting pipe 3 is a hot or cold extruded part. The connecting pipe 3 is then welded and fixed to the fixed bracket 2 to form a bracket assembly 1. The materials of the fixed bracket 2 and the connecting pipe 3 in this embodiment are both steel.

[0032] like Figure 1-3As shown, the connecting pipe 3 includes an integrally arranged straight pipe portion 31 and a cold-forged special-shaped pipe portion 32; an avoidance groove 30 is opened in the circumferential direction on the side wall of the connecting pipe 3, and the avoidance groove 30 is matched with the brake pad avoidance, and the avoidance groove 30 is arranged between the straight pipe portion 31 and the cold-forged special-shaped pipe portion 32, and the avoidance groove 30 is used to avoid the brake pad, so that the brake pad can extend from the avoidance groove 30 into the inner cavity of the connecting pipe 3 to realize linked braking; the cold-forged special-shaped pipe portion 32 includes a plurality of stop protrusions 311 extending radially outward along the connecting pipe 3, and the fixed bracket 2 is matched with the stop protrusion 311. The addition of the stop protrusion 311 can improve the position installation accuracy between the fixed bracket 2 and the connecting pipe 3, and ensure the accuracy and feel of the brake; the fixed bracket 2 is integrally bent to form an adjuster mounting plate 23, and the adjuster mounting plate 23 is provided with a mounting hole 231. The adjuster mounting plate 23 can be used to install the adjuster, and the integral bending is used to prevent the adjuster from being damaged. The regulator mounting plate 23 formed by the process makes the connection structure between the regulator mounting plate 23 and the fixed bracket 2 more stable; a clamp assembly 4 for frictionally cooperating with the brake pad is provided in the inner cavity of the connecting tube 3, the clamp assembly 4 includes a ball 41 and a rotating seat 42 rotatably arranged in the connecting tube 3, the clamp assembly 4 also includes a damping plate (not shown) that pushes and cooperates with the ball 41, the damping plate is in anti-rotation cooperation with the connecting tube 3, and the damping plate can slide axially along the inner cavity of the straight tube portion 31 of the connecting tube 3, the rotating seat 42 is provided with a plurality of guide grooves 43, the rotating seat 42 is guided and cooperated with the ball 41 through the guide grooves 43, the brake line is pulled and then the rotating seat 42 is pulled to rotate relative to the connecting tube 3, the guiding cooperation between the guide grooves 43 and the ball 41 is used to push the ball 41 to axially displace relative to the rotating seat 42 in the inner cavity of the connecting tube 3, so that the ball 41 pushes the damping plate to press against the brake pad.

[0033] like Figure 2-3 As shown, the fixed bracket 2 includes an arc-shaped welding portion 21 located in the middle and mounting portions 22 integrally arranged at both ends of the arc-shaped welding portion 21. The arc-shaped side wall of the arc-shaped welding portion 21 can increase the fitting area between the middle of the fixed bracket 2 and the connecting pipe 3, thereby increasing the welding firmness between the connecting pipe 3 and the fixed bracket 2. In addition, the mounting portions 22 at both ends of the arc-shaped welding portion 21 can be used to fix the bracket assembly 1 to the vehicle; the mounting portions 22 on both sides are symmetrically arranged at both ends of the arc-shaped welding portion 21 and are located on the same plane, and each mounting portion 22 is provided with a waist-shaped hole 221. In the prior art, the bracket assembly 1 is usually fixed to the vehicle by inserting bolts into the through holes. In the utility model, the through holes are replaced by waist-shaped holes 221 corresponding to the bolts, and the relative installation position of the bracket assembly 1 is adjusted by adjusting the relative position of the bolts in the waist-shaped holes 221.

[0034] like Figure 4As shown, the support assembly 1 is coated with a rubber layer 5. The addition of the rubber layer 5 can improve the corrosion resistance and overall structural strength of the support assembly 1; the connecting pipe 3 has a plurality of stop protrusions 311 extending radially outward, and the rubber layer 5 is coated on the stop protrusions 311 to form a protrusion 51, and a hollow groove 511 is provided in the protrusion 51.

[0035] like Figure 5 As shown, it is an assembly schematic diagram of the utility model in which the driving arm 6 and the bracket 7 are installed on the bracket assembly, wherein the regulator 8 is installed on the regulator mounting plate 23 of the steel disc brake, the driving arm 6 is fixedly connected to the outside of the rotating seat 42, and the mounting portion 22 is fixedly connected to the bracket 7.

[0036] The basic working principle of the utility model is as follows: the utility model separates the fixed bracket 2 and the connecting pipe 3 and uses different processes to process and prepare them, and uses stamping to make the fixed bracket 2, thereby ensuring the dimensional accuracy of the fixed bracket 2 and the accuracy of the installation of the bracket assembly 1 on the vehicle, and uses hot and cold extrusion to make the connecting pipe 3, thereby improving the density of the connecting pipe 3 and thus improving the structural strength of the connecting pipe 3, and then welds the connecting pipe 3 to the fixed bracket 2 to form the bracket assembly 1. Different from the bracket assembly 1 produced as a whole by hot and cold extrusion of aluminum alloy, the utility model only uses hot and cold extrusion to form the connecting pipe 3 that requires high structural strength, which can not only improve the structural strength of key load-bearing components, but also reduce the processing time and cost of other components, simplify the processing technology, and thus improve the overall processing efficiency of the bracket assembly 1 of the utility model, and has the effects of low production cost, simple manufacturing process, high processing efficiency and high structural strength.

[0037] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A high-strength steel disc brake, characterized by: The invention comprises a fixed bracket (2) and a connecting pipe (3), wherein the materials of the fixed bracket (2) and the connecting pipe (3) are set to be steel, the fixed bracket (2) is a stamped part, and the connecting pipe (3) is a cold-extruded part, and the connecting pipe (3) is welded and fixed to the fixed bracket (2) to form a bracket assembly (1).

2. A high-strength steel disc brake according to claim 1, characterized in that: The connecting pipe (3) comprises an integrally arranged straight pipe portion (31) and a cold-forged special-shaped pipe portion (32).

3. A high-strength steel disc brake according to claim 2, characterized in that: The side wall of the connecting pipe (3) is provided with an escape groove (30) along the circumferential direction, the escape groove (30) is matched with the brake pad for escape, and the escape groove (30) is arranged between the straight pipe part (31) and the cold-forged special-shaped pipe part (32).

4. A high-strength steel disc brake according to claim 2, characterized in that: The cold-forged special-shaped pipe portion (32) comprises a plurality of stop protrusions (311) extending radially outwardly along the connecting pipe (3), and the fixing bracket (2) is in stop cooperation with the stop protrusions (311).

5. A high-strength steel disc brake according to claim 1, characterized in that: The fixing bracket (2) comprises an arc-shaped welding portion (21) located in the middle and mounting portions (22) integrally provided at both ends of the arc-shaped welding portion (21).

6. A high-strength steel disc brake according to claim 5, characterized in that: The mounting portions (22) on both sides are symmetrically arranged at the two ends of the arc-shaped welding portion (21) and are located on the same plane, and each mounting portion (22) is provided with a waist-shaped hole (221).

7. A high-strength steel disc brake according to claim 1, characterized in that: The fixing bracket (2) is integrally bent to form a regulator mounting piece (23), and the regulator mounting piece (23) is provided with a mounting hole (231).

8. A high-strength steel disc brake according to claim 1, characterized in that: A clamp assembly (4) for frictionally cooperating with a brake pad is provided in the inner cavity of the connecting tube (3), and the clamp assembly (4) comprises a ball (41), a rotating seat (42) rotatably arranged in the connecting tube (3), and a damping plate. The rotating seat (42) is provided with a plurality of guide grooves (43). The rotating seat (42) is guided and cooperated with the ball (41) through the guide grooves (43), and the ball (41) is pushed and cooperated with the damping plate.

9. A high-strength steel disc brake according to claim 1, characterized in that: The support assembly (1) is coated with a rubber layer (5).

10. A high-strength steel disc brake according to claim 9, characterized in that: The connecting pipe (3) is provided with a plurality of stop protrusions (311) extending radially outwards, the rubber coating layer (5) covers the stop protrusions (311) to form a protrusion (51), and a hollow groove (511) is provided in the protrusion (51).

Images